roundup
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) /* to any y */
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
#define roundup(sz) ((sz / 4 + (sz % 4 > 0)) * 4)
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
#define roundup(x) (((unsigned long)(x)+7) & ~7)
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) /* to any y */
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
#undef roundup
#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
#undef roundup
#define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))